Jamkojori is a village in Manjhari tehsil in district of Pashchimi Singhbhum, Jharkhand, India. As per the data provided by Census of India in 2011, total population of Jamkojori was 940 which includes 453 males and 487 females. Jamkojori covers 216.96 ha area. Pincode of Jamkojori is 833201.